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Finding the Fourth Proportional to 389,851.80, 584,777.70 and 329,026.20

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Solution

The fourth proportional to 389,851.80, 584,777.70 and 329,026.20 is: 493,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,851.80 : 584,777.70 = 329,026.20 : x
  2. Step 2: Convert to fraction form
    389,851.80/584,777.70 = 329,026.20/x
  3. Step 3: Cross multiply
    389,851.80x = 584,777.70 × 329,026.20
  4. Step 4: Simplify right side
    389,851.80x = 192,407,184,475.74
  5. Step 5: Solve for x
    x = 192,407,184,475.74/389,851.80
  6. Step 6: Final answer
    x = 493,539.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.